Newbie Here and Newbie to electronics. My apologies for asking what I believe is a way too simple question for this group. I have just begun and online course to learn more. In the meantime, I am hoping to get some guidance in a immediate problem.
My goal is to create a magnetic coil with the greatest magnetic field from a 28v AC circuit. The potentiometer is computer based managing the input of frequencies form 25 hz to 20,000 hz via the headphone jack on my laptop.
Problem: Frequencies below 1000 hz overheat the resister I have in the system. All other frequencies work well without overheating. I would like to be able to turn the system up to full power and just leave it there.
Here is what i have:
24v - 1A powered amplifier
28 AWG Speaker wire to the resister
Resister: 68 ohm-1/2 watt
Coil is circular ring with 38 AWG magnet wire with 150 turns around the ring (not around a core...just circular around the ring. (probably 150 ft)
The coil itself is not overheating, only the resister.
1. If I increase the wattage of the resistor will it reduce the size of the magnetic field.
2. Can I decrease the ohms and increase the resistors wattage to increase the magnetic field without over heating the system? Say...33 ohms and 2 watt resistor?
My goal is to create a magnetic coil with the greatest magnetic field from a 28v AC circuit. The potentiometer is computer based managing the input of frequencies form 25 hz to 20,000 hz via the headphone jack on my laptop.
Problem: Frequencies below 1000 hz overheat the resister I have in the system. All other frequencies work well without overheating. I would like to be able to turn the system up to full power and just leave it there.
Here is what i have:
24v - 1A powered amplifier
28 AWG Speaker wire to the resister
Resister: 68 ohm-1/2 watt
Coil is circular ring with 38 AWG magnet wire with 150 turns around the ring (not around a core...just circular around the ring. (probably 150 ft)
The coil itself is not overheating, only the resister.
1. If I increase the wattage of the resistor will it reduce the size of the magnetic field.
2. Can I decrease the ohms and increase the resistors wattage to increase the magnetic field without over heating the system? Say...33 ohms and 2 watt resistor?